Meckley's Quarry: Celestine Rockhounding in Northumberland County, Pennsylvania

Updated June 2026

Meckley's Quarry is a mapped rockhounding spot in Northumberland County, Pennsylvania. Reported finds include celestine. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Northumberland County
State: Pennsylvania
Nearest road: Toad Valley Road
Postcode: 17864
Coordinates: 40.67556, -76.83196

Geology at Meckley's Quarry

This spot sits on Keyser and Tonoloway Formations, undivided, mapped as limestone that formed roughly 445 to 360 million years ago. Carbonate rock like this dissolves and weathers readily, so fresh road cuts, quarries, and creek exposures are typically the most productive ground.

Mapped unit: Keyser and Tonoloway Formations, undivided
Age: 445–360 Ma (Silurian to Devonian)
Rock types: limestone
Elevation: 590 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Meckley's Quarry

Best months: March to November. Typical highs run 84°F in midsummer and 35°F in midwinter, with winter lows near 19°F.

Climate normals: NOAA 1991-2020 monthlies, SELINSGROVE 2 S station (8 mi away), adjusted for elevation.

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Meckley's Quarry

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Celestine

Nearby rockhounding spots

Other rockhounding spots within driving distance of Meckley's Quarry.

Across the state line from Meckley's Quarry

Meckley's Quarry is close enough to the Pennsylvania border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Meckley's Quarry FAQ

Where is Meckley's Quarry?+

Meckley's Quarry is in Northumberland County, Pennsylvania, at 40.67556, -76.83196. Nearest road: Toad Valley Road.

What rocks and minerals can you find at Meckley's Quarry?+

Meckley's Quarry is reported to produce Celestine.

Is collecting allowed at Meckley's Quarry?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Meckley's Quarry?+

A rock hammer, sturdy gloves, safety glasses, and a collecting bag cover the basics here. Add a spray bottle: wet rock shows color and pattern that dry rock hides.

When is the best time to visit Meckley's Quarry?+

The most comfortable months at Meckley's Quarry are March to November.

How do I get to Meckley's Quarry?+

Open the directions link to navigate to 40.67556, -76.83196 in Google Maps. The nearest road is Toad Valley Road.

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Open Meckley's Quarry on the map

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